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:
Apr. 27, 2021
Filed:
Nov. 20, 2018
Sumitomo Heavy Industries, Ltd., Tokyo, JP;
Koji Moritani, Kanagawa, JP;
Mitsuhiro Tamura, Kanagawa, JP;
SUMITOMO HEAVY INDUSTRIES, LTD., Tokyo, JP;
Abstract
A gear motor includes a speed reducer and a motor. The speed reducer includes an internal gear, an external gear, an input shaft having an oscillating portion oscillating the external gear, an oscillating bearing which is disposed between the external gear and the oscillating portion, and an input bearing which supports the input shaft, the input shaft includes a protrusion portion which protrudes from the motor side such that a rotor of the motor is provided in the protrusion portion, and includes a bearing disposition section in which the input bearing is disposed and a rotor disposition section in which the rotor is disposed in this order from the speed reducer side toward the motor side, an outer diameter of the rotor disposition section is equal to or less than an outer diameter of the bearing disposition section, and a rotor magnet is directly fixed to the rotor disposition section.