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:
Oct. 15, 2024
Filed:
Jun. 21, 2023
Mabuchi Motor Co., Ltd., Matsudo, JP;
Akira Matsunawa, Chiba, JP;
MABUCHI MOTOR CO., LTD., Chiba, JP;
Abstract
A resolver includes a first transformer coil provided on a first board of a stator, and a second transformer coil provided on a second board of a rotor. The first board is provided with electric elements placed around a rotary shaft and inward of the first transformer coil, and signal wires of the electric elements. The first transformer coil includes an arc-shaped first outer portion and a first inner portion that are provided with a first air gap therebetween. The second transformer coil includes a ring-shaped second outer portion and a second inner portion that are provided with a second air gap therebetween. The first air gap and the second air gap are provided, facing each other in a rotary shaft direction. The signal wires are routed in an opening region in which the first outer portion and the first inner portion are not present, in a ring-shaped region in which the first transformer coil is extended.