Title:
COROTATION PREVENTING NUT AND COROTATION DETECTING DEVICE
Document Type and Number:
Japanese Patent JP2005249075
Kind Code:
A
Abstract:
To provide technology for detecting corotation of a nut and supplying oil for preventing corotation.
The nut 10 is engaged with a bolt 12 and fastened through a washer 18 to fasten fastened bodies 14, 16. A contact surface 19 of the nut 10 opposite to the washer 18 is provided with a distortion gauge 28 for detecting corotation of the washer 18. An oil tank 36 storing corotation preventing oil is embedded in the top 11 of the nut 10. When the corotation of the washer 18 is detected on the basis of a change in resistance of the distortion gauge 28, a control part 30 opens a solenoid valve 32 to supply corotation preventing oil to the contact surface 19, thereby reducing frictional resistance between the nut and the washer.
Inventors:
KATO YOSHIYUKI
Application Number:
JP2004060394A
Publication Date:
September 15, 2005
Filing Date:
March 04, 2004
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
F16B31/02; (IPC1-7): F16B31/02
Attorney, Agent or Firm:
Sakaki Morishita
Yusuke Murata
Tomoyuki Miki
Yusuke Murata
Tomoyuki Miki