Title:
ACOUSTIC EMISSION MEASURING DEVICE, POWER TRANSMISSION DEVICE, AND ROLLING BEARING DEVICE
Document Type and Number:
WIPO Patent Application WO/2007/034867
Kind Code:
A1
Abstract:
An acoustic emission measuring device in which a piezoelectric element (63)
used as an AE sensor is secured to the inner ring (62) of a ball bearing (61) fixedly
fitted onto a rotating shaft (60). The axial end face of a roughly tire-shaped
case (65), which is capable of rotating in synchronism with the inner ring (62)
and storing a firs coil in which a current flows from the piezoelectric element
(63), is secured to the inner ring (62). The axial end face of a roughly tire-shaped
case (66) for storing a second coil is secured to an outer ring (64). The first coil
and the second coil are oppositely disposed on the radial outer side of the rotating
shaft (60) so that the first coil and the second coil can face to each other in the
radial direction.
Inventors:
MURAKAMI ISAO (JP)
OGUMA NORIYASU (JP)
OGUMA NORIYASU (JP)
Application Number:
PCT/JP2006/318724
Publication Date:
March 29, 2007
Filing Date:
September 21, 2006
Export Citation:
Assignee:
JTEKT CORP (JP)
MURAKAMI ISAO (JP)
OGUMA NORIYASU (JP)
MURAKAMI ISAO (JP)
OGUMA NORIYASU (JP)
International Classes:
G01N29/14; F16C19/52; F16C41/00; G01M13/02; G01M13/04
Foreign References:
| JPH04541B2 | 1992-01-07 | |||
| JP2992727B2 | 1999-12-20 |
Other References:
NISHIMOTO S. AND OGUMA N.: "AE ni yoru Korogari Sesshoku Hiro no Hyoka", KOYO ENGINEERING JOURNAL, vol. 137, 1990, pages 34 - 39, XP003009646
Attorney, Agent or Firm:
TANAKA, Mitsuo et al. (IMP Building 3-7, Shiromi 1-chome, Chuo-k, Osaka-shi Osaka 01, JP)
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