公开(公告)号：US11131369B2

公开(公告)日：2021-09-28

申请号：US16361267

申请日：2019-03-22

Applicant: DENSO CORPORATION

Inventor： Norio Gouko ,  Toshihisa Taniguchi ,  Atusi Sakaida ,  Keiji Okamoto ,  Yoshihiko Shiraishi ,  Masahiro Asano ,  Tomikazu Ishikawa ,  Atsushi Kusaka

IPC: F16H25/24 ,  F16H25/20 ,  F16H25/22

Abstract: A failure diagnostic apparatus for use in a ball screw conveyer includes a bearing stopper placed in contact with a bearing supporting a ball screw, a sensor unit equipped with an elastic member and a heat flux sensor, and a malfunction detector. The heat flux sensor works to produce an output as a function of deformation or displacement of the bearing stopper. The malfunction detector works to analyze the output from the heat flux sensor to detect a failure in operation of the ball screw conveyer. This enables a malfunction of the ball screw conveyer to be detected quickly and accurately.