Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
ROTATION ANGLE DETECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/082576
Kind Code:
A1
Abstract:
A rotation angle detection device is provided which can prevent damage to a magnet holding member and housing and which can detect the rotation angle in a stable state. This rotation angle detection device 1 is provided with: a magnet unit 30 comprising a magnet 10 which rotates with respect to a magnetic detection means 50 that detects change in the magnetic field, and a columnar magnet holding member 20 which rotates linked to a rotation shaft (the detected body) L and to which the magnet 10 is attached; and a housing 40 which houses the magnet holding member 20 and in which the magnetic detection means 50 is provided opposite of the magnet 10. The housing 40 is provided with a bottomed cylinder-shape housing unit 44 which houses the magnet holding member 20 and which has an opening 44a, of which the inner diameter D1 (D2) is larger than the outer diameter d1 (d2) of the magnet holding member 20.

Inventors:
SUYAMA YUKI
SUZUKI NORIO
Application Number:
PCT/JP2018/035412
Publication Date:
May 02, 2019
Filing Date:
September 25, 2018
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NIPPON SEIKI CO LTD (JP)
International Classes:
G01D5/12; G01D5/245
Foreign References:
JP2007139458A2007-06-07
US20060006861A12006-01-12
JP2016099187A2016-05-30
JP2008536038A2008-09-04
JP2004212374A2004-07-29
Download PDF: