Title:
TORQUE DETECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/175138
Kind Code:
A1
Abstract:
A torque detection device that is provided with: a ring-shaped multipole magnet that is fixed to a first shaft; a yoke holder that is fixed to a second shaft, which is coaxially connected to the first shaft via a torsion bar, and that has a cylindrical part that surrounds the magnet; a pair of magnetic yokes that are fixed to the yoke holder and that have a plurality of tab parts that face the magnet on the inside of the cylindrical part; and a sensor part that detects the rotational phase difference between the first shaft and the second shaft. The pair of magnetic yokes (29, 30) are respectively provided with a plurality of caulking pieces (29c, 30c) that are caulked to the outer circumference of the cylindrical part (27b). The caulking pieces (29c, 30c) are arranged in positions that overlap specific tab parts (29a, 30a) selected from among the plurality of tab parts (29a, 30a) in the radial direction of the cylindrical part (27b) and are formed to be narrower than the tab parts (29a, 30a). As a result, the present invention prevents undesired deformation of the tab parts of the magnetic yokes when the magnetic yokes are caulked and fixed to the yoke holder.
Inventors:
YONEDA TOSHIHIRO (JP)
MATSUMOTO KENJIROU (JP)
MATSUMOTO KENJIROU (JP)
Application Number:
PCT/JP2016/062706
Publication Date:
November 03, 2016
Filing Date:
April 22, 2016
Export Citation:
Assignee:
HONDA LOCK KK (JP)
International Classes:
G01L3/10; B62D5/04
Foreign References:
| JP2010539472A | 2010-12-16 | |||
| JP2013524207A | 2013-06-17 | |||
| JP2015184220A | 2015-10-22 |
Attorney, Agent or Firm:
OCHIAI & CO. (JP)
Patent business corporation Ochiai patent firm (JP)
Patent business corporation Ochiai patent firm (JP)
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