Bearing assembly and bearing seal having RFID function

Patent metadata

Field	Value
Publication number	US-9347495-B2
Application number	US-201314372793-A
Country	US
Kind code	B2
Filing date	Jan 15, 2013
Priority date	Jan 25, 2012
Publication date	May 24, 2016
Grant date	May 24, 2016

Abstract

A bearing assembly having an RFID (radio frequency identification) function, which can implement a communication and has a capability of accomplishing information communication on a non-contact basis. This bearing assembly includes an inlet, including an IC chip and an antenna connected with such IC chip, and a magnetic sheet, both of which are embedded in overlapped relation to each other in a bearing seal for sealing a bearing space.

First claim

What is claimed is:

1. A bearing assembly having a function of radio frequency identification with which an information communication can be accomplished on a non-contact basis, comprising:
an inlet including an IC chip and an antenna connected with the IC chip; and
a magnetic sheet,
wherein the inlet and the magnetic sheet are embedded in a bearing seal, used to seal a bearing space, and
the bearing seal includes a rubber bonded by vulcanization to a core metal,
the IC chip and the antenna and the magnetic sheet are bonded by vulcanization simultaneously with the rubber, and
an inner side face of the magnetic sheet adjacent the bearing space is disposed in contact with or in the vicinity of the core metal in the bearing seal whereas the inlet is disposed on an outer side face of the magnetic sheet.

2. The bearing assembly as claimed in claim 1 , wherein the antenna is a coil wound on a flat surface shape or a wire wound around a ferrite core.

3. The bearing assembly as claimed in claim 1 , wherein the IC chip and the antenna are mounted on a single thin plate shaped member, and
the magnetic sheet is pasted to a surface of the thin plate shaped member opposite to a mounting surface.

4. The bearing assembly as claimed in claim 1 , wherein the IC chip is provided with a memory to record information related to manufacture or testing of the bearing assembly, and inspection information or operating information of an apparatus, and
inspection or operating is performed after the bearing assembly has been incorporated in the apparatus.

5. A bearing assembly having a function of radio frequency identification with which an information communication can be accomplished on a non-contact basis, comprising:
an inlet including an IC chip and an antenna connected with the IC chip; and
a magnetic sheet,
wherein the inlet and the magnetic sheet are in a raceway ring in overlapped relation to each other,
a recess is provided in an end face or a peripheral surface of the raceway ring, and the inlet and the magnetic sheet are provided in the recess, and
one side face of the magnetic sheet is disposed at a bottom portion of the recess in the raceway ring, and the inlet is disposed on the other side face of the magnetic sheet.

6. The bearing assembly as claimed in claim 5 , wherein the inlet and the magnetic sheet are configured to be inserted into the recess in the raceway ring, and
an opening of the recess is sealed by an elastic material or a thermosetting resin.

7. A bearing seal fitted to a bearing assembly to seal a bearing space delimited between raceway rings of such bearing assembly, comprising:
a core metal;
an elastic body covering the core metal;
an inlet including an IC chip and an antenna connected with the IC chip; and
a magnetic sheet,
wherein the inlet and the magnetic sheet are embedded in the elastic body in overlapped relation to each other,
the elastic body is bonded by vulcanization to the core metal,
the IC chip and the antenna and the magnetic sheet are bonded by vulcanization simultaneously with the elastic body, and
an inner side face of the magnetic sheet is disposed in contact with or in the vicinity of the core metal whereas the inlet is disposed on an outer side face of the magnetic sheet.

Assignees

• Ntn Toyo Bearing Co Ltd

Inventors

• Ito Hiroyoshi

Classifications

• F16C33/7853

  with one or more sealing lips to contact the inner race · CPC title

• F16C41/008 Primary

  Identification means, e.g. markings, RFID-tags; Data transfer means · CPC title

• F16C33/586

  outside the space between the races, e.g. end faces or bore of inner ring · CPC title

• F16C19/02

  with bearing balls essentially of the same size in one or more circular rows · CPC title

• F16C19/06

  with a single row or balls · CPC title