The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 29, 2002
Filed:
Jun. 11, 2001
Akihiro Nomura, Kitakyushu, JP;
Shinji Yamashita, Kitakyushu, JP;
Masafumi Tamai, Kitakyushu, JP;
Satoshi Murakami, Kitakyushu, JP;
Shinobu Satou, Kitakyushu, JP;
Takeo Suzuki, Kitakyushu, JP;
Kabushiki Kaisha Yaskawa Denki, Fukuoka, JP;
Abstract
The invention relates to a protective device for a clean robot that includes a base in which actuators and for driving a robot arm are accommodated; a translational guide for causing the base to travel in a rectilinear direction; and a robot controller that drives and controls the drive motor A and A of the robot arm and an actuator of the translational guide ; wherein the protective device further includes acceleration sensors , which are disposed in the base and are provided in respective axes so that they can detect an impact, when the clean robot interferes with a surrounding substance, as vibration acceleration in the three-dimensional directions; an interference detecting device that outputs a pulse when the detection signals of the acceleration sensors of the respective axes exceed the threshold values that will become standards; and the first AND circuit that converts signals outputted from the interference detection means of the respective axes to interference signals, and the drive motors A and A for the robot arm and the actuator for driving the translation guide are stopped; whereby it is possible to prevent an internally incorporated speed reducer in the robot from being damaged.