Title:
TORQUE DETECTION DEVICE AND MECHANISM
Document Type and Number:
WIPO Patent Application WO/2022/181045
Kind Code:
A1
Abstract:
The present invention addresses the problem of enabling torque applied to a rotating body to be detected. This torque detection device (9) comprises: a crystal device (90) attached to a rotating body that rotates about a rotation axis with respect to a non-rotating body; a first coil (91) wound around the rotating body about the rotation axis and electrically connected to the crystal device (90); a second coil (92) held by the non-rotating body, wound around the outer peripheral surface of the first coil (91) with a gap therebetween, and magnetically coupled to the first coil (91); a pair of input ends (931, 932) which are respectively connected to both ends of the second coil (92) and to which an AC voltage source (93) is connected; a current sensor (94) that is held by the non-rotating body and detects current flowing through the second coil (92); and a torque detection unit (95) that is held by the non-rotating body and detects torque applied to the rotating body, on the basis of the phase difference between the phase of the output voltage from the voltage source (93) and the phase of the current detected by the current sensor (94).
Inventors:
TANJI YUSUKE
Application Number:
PCT/JP2021/048629
Publication Date:
September 01, 2022
Filing Date:
December 27, 2021
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
G01L3/10; B62J45/411; B62M6/45
Foreign References:
| JP2001153737A | 2001-06-08 | |||
| JP2020067282A | 2020-04-30 | |||
| JPH11132878A | 1999-05-21 | |||
| JPH0872781A | 1996-03-19 | |||
| JP2001272289A | 2001-10-05 | |||
| US20160185419A1 | 2016-06-30 |
Attorney, Agent or Firm:
HOKUTO PATENT ATTORNEYS OFFICE (JP)
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