Title:
NONCONTACT DISPLACEMENT DETECTOR
Document Type and Number:
Japanese Patent JP3134563
Kind Code:
B2
Abstract:
PURPOSE: To provide a high-precision displacement detector by employing a high-precision magnetic circuit to resolve the linearity problem of the magnetic circuit in the contact displacement detector using a magnetic/electric converting element.
CONSTITUTION: A noncontact displacement detector is provided with a magnetic/ electric converting element 11, two permanent magnets 13A, 13B arranged in the magnetic-sensitive direction of the magnetic/electric converting element 11 across it and having magnetization directions perpendicular to the magnetic- sensitive direction, parallel with each other, and opposite to each other, a holder 14 fitted with permanent magnets 13A, 13B, and a rotary shaft 15 connected to the holder 14, having the axial direction in parallel with the magnetic- sensitive direction of the magnetic/electric converting element 11, connected to a measurement object, and rotated in response to its displacement. The magnetic/electric converting element 11 is relatively fixed against the rotation of the rotary shaft 15.
Inventors:
Kiyoshi Saito
Kazuyuki Tsujioka
Shinjiro Ueda
Kazuyuki Tsujioka
Shinjiro Ueda
Application Number:
JP32659292A
Publication Date:
February 13, 2001
Filing Date:
December 07, 1992
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
G01B7/30; G01B7/00; G01D5/245; (IPC1-7): G01B7/30; G01D5/245
Domestic Patent References:
| JP42914A | ||||
| JP59109907U |
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)
Previous Patent: 受付装置
Next Patent: FUEL INJECTION TIMING CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE
Next Patent: FUEL INJECTION TIMING CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE